ATOM® Dosimetry Phantoms

Distortion Check Automated Analysis of Distortion in MRgRT

Model 603S The fast, user friendly, cloud based solution.

SCAN UPLOAD REVIEW REPORTS EXPORT DICOM IMAGES & TREND ANALYSIS OVERLAYS TO TPS

Distortion Check is a new, cloud-based solution designed to quickly and automatically quantify distortion in MRI im- Features ages. Used in conjunction with CIRS MRI Grid phantoms, the software provides the capability to quickly and accurately • Quickly & automatically analyze complete MR data sets measure distortion throughout the entire image volume. • Unique grid phantoms provide physical control points throughout entire 3D image volume After detecting all grid intersections, the software registers either a CAD or CT scan ground truth to these MR detected • Density of control points optimized to bring interpolation control points. An interpolation is then performed to gener- close to linearity ate the 3D distortion vector fields. • CIRS materials simulate distortion due to susceptibility and chemical shifts typical to clinical patient scans Results can be reported in a variety of output formats includ- ing scatter plots, contour plots, box and whisker plots for • Cloud based solution frees user of operating system and trending and DICOM overlays that can be imported to TPS hardware constraints or other 3rd party software. The software algorithms will • Online deployment facilitates collaboration and easy work with any grid configuration and CIRS employs propri- review and portability of results etary 3D printing techniques that enable easy modification of grid phantoms to meet customer requirements.

MR Distortion Check Automated Analysis of Distortion in MRgRT

Large Field MR Image Distortion Phantom Assess MR image distortion in large bore MRI

The Large Field MRI Distortion Phantom, Model 604-GS is designed for assessment of magnetic resonance imaging distortion. The phantom’s large volume 3D grid with optimized grid spacing (20.3 I-S, 20.5 A-P & 21.5 L-R) makes it suitable for whole body MR distortion QA. The phantom can be filled with various signal-generating solutions. When empty, the grid-air in- terface provides good contrast under CT. The phantom images well with all CT techniques and MRI sequences tested to date, including T1 weighted, T2 weighted, 3D Time of Flight, MPRAGE and CISS sequences.

The phantom is comprised of a leak-proof PMMA cylinder and measures 330 mm in diameter by 300 mm long. The entire volume is filled with a unique orthogonal 3D grid of 3 mm diameter rods to provide complete geometric data throughout the imaging volume. The phantom is marked for ease of alignment to positioning lasers and is designed for use with both curved and flat gantry tables.

Patient induced magnetic inhomogeneity occurs when a patient is placed in the scanner due to magnetic susceptibility, which causes the tendency of a material to magnetize in the presence of a magnetic field. Regions of abrupt change in tissue density or voids between tissue and air are prone to high MODEL 604-GS magnetic susceptibility which disturbs the magnetic field. Distortions due Features to susceptibility and smaller distortions due to chemical shifts are better qualified by a phantom that presents such distortions caused throughout • Works with Distortion Check Software the entire field of view (FOV). • Large FOV distortion evaluation Phantoms with MR signals suspended in foam, PMMA or other plastics or phantoms with MR signals only at the phantom’s outer boundaries mainly • Unique orthogonal grid with optimized 3D spacing characterize only B0 and Gradient Inhomogeneity related distortions. Such distortions are typically addressed by manufacturer correction algorithms. • Leak-proof design

CIRS phantoms are filled entirely with 3D orthogonal girds surrounded by • Sub-millimeter grid precision background signal generating liquids to mimic distortions due to suscep- tibility and chemical shifts that are most likely to occur when a patient is • Easy integration and laser alignment scanned. All the components of distortion are thereby observed in MRI • Ground truth files for grid available in various digital formats images and taken into account • 2152 Control Points

SOFTWARE OPTIONS MODEL 604-GS INCLUDES PART NO. DESCRIPTION QTY COMPONENT DESCRIPTION Distortion Check software (license for 2 years or 25 success- 1 Large Field MR Image Distortion Phantom 603S-25 fully analyzed scans, whichever expires first) Phantom Serial Number Required 1 3/4” garden hose filling tube (USA) Distortion Check software (license for 2 years or 50 success- 1 Complimentary 90 day license for 5 successful 603S-50 fully analyzed scans, whichever expires first) Phantom Serial analyzed scans using Distortion Check Software: For Number Required instructions on how to create your account, go to https:// www.cirsinc.com/software/distortion-check/ Distortion Check software (license for 2 years or 100 suc- 1 User Guide 603S-100 cessfully analyzed scans, whichever expires first) Phantom Serial Number Required 1 Foam-Lined Carry Case Distortion Check software (license for 2 years or 200 suc- - 60-Month Warranty 603S-200 cessfully analyzed scans, whichever expires first) Phantom Serial Number Required OVERALL DIMENSIONS 300 mm (L), 276 mm (H) , 330 mm (DIA) Distortion Check software (license for 2 years or 500 suc- 603S-500 cessfully analyzed scans, whichever expires first) Phantom WEIGHT (DRY) 17 lb. (7.7 kg) Serial Number Required WEIGHT (FILLED) 62 lb. (28.1 kg) 2 MR Image Distortion & Image Fusion Head Phantom Assess MR distortion & Image Fusion in Stereotactic Radiosurgery Planning

CIRS Model 603-GS was designed to assess MR image distortion in Stereotactic Radiosurgery Planning. It’s also a useful tool for verifying image fusion and deformable image registration algorithms used in various treat- ment planning systems. The tissue equivalent, anthropomorphic design closely matches a clinical imaging scenario. The phantom can be imaged using X-ray, Computed Tomography and Magnetic Resonance. It images well with all MRI sequences tested to date, including T1 weighted, T2 weighted, 3D Time of Flight, MPRAGE and CISS.

The entire inter-cranial portion of the skull volume is filled with an orthogonal 3D grid of 2.5mm diameter cross-like shaped rods spaced 10mm (I-S), 10.5mm (AP) and 11mm (L-R). Extra material added in the grid intersec- tions increase grid signal. Five extended axis-rods intersect at the reference origin of the grid. The end of each extended axis is fitted with CT/MR mark- ers allowing for accurate positioning with lasers and co-registration of CT and MR image sets.

MODEL 603-GS Features • Works with Distortion Check Software • Provides a realistic anthropomorphic scenario for CT and MR imaging • Presents simulated bony anatomy as rigid landmarks for image fusion • Unique inter-cranial 3D grid design used to assess spatial distortion • Special pads compatible with all fixation frames • CT/MR markers facilitate positioning and image regist- ration • 859 Control Points

MODEL 603-GS INCLUDES MODEL QTY COMPONENT DESCRIPTION SOFTWARE OPTIONS - 1 MR Distortion & Image Fusion Head Phantom PART NO. DESCRIPTION

- 1 ABS Cradle Distortion Check software (license for 2 years or 25 success- 603S-25 fully analyzed scans, whichever expires first) Phantom Serial Complimentary 90 day license for 5 successful Number Required 1 analyzed scans using Distortion Check Software: For instructions on how to create your account, go to Distortion Check software (license for 2 years or 50 success- https://www.cirsinc.com/software/distortion-check/ 603S-50 fully analyzed scans, whichever expires first) Phantom Serial Number Required - 1 Custom Carry Case Distortion Check software (license for 2 years or 100 suc- - 1 User Guide 603S-100 cessfully analyzed scans, whichever expires first) Phantom Serial Number Required - - 60-Month Warranty Distortion Check software (license for 2 years or 200 suc- 038-20 1 SRS Frame Support Cups (set of 4) 603S-200 cessfully analyzed scans, whichever expires first) Phantom Serial Number Required

OVERALL DIMENSIONS 32 cm x 24 cm x 18 cm Distortion Check software (license for 2 years or 500 suc- 603S-500 cessfully analyzed scans, whichever expires first) Phantom WEIGHT 12 lbs (5.5 kg) Serial Number Required 3 Distortion Check Software Automatically analyze complete MR data sets

Features

• Simple, user friendly web interface • Detect physical control points throughout the 3D image volume • Web based pdf report in summary or detailed format to NEMA MS 12 standard recommendations. • Output raw data or DICOM overlay files for use with 3rd party software • Establish multiple user accounts with different permissions • Easily analyze and track multiple machines, imaging sequences Distortion Check is cloud-based solution designed to quickly and and phantoms automatically quantify distortion in MRI images. Used in conjunc- tion with CIRS MRI Grid phantoms, the software provides the • Establish distortion tolerance thresholds specific to different capability to quickly and accurately measure distortion throughout imaging sequences the entire image volume. • Re-compute any scans acquired for different tolerance thresh- olds

Axial Contour Plot Sagittal Contour Plot Coronal Contour Plot Scatter Plot

3D Scatter Plot, all points, Grid intersections Trend Analysis Control vs. Reference Detected vs. Reference

Computerized Imaging Reference Systems, Inc. has © 2017 Computerized Imaging Reference Systems, Inc. All rights reserved. been Registered by Underwriters Laboratories Inc. Specifications subject to change without notice. to the International Organization for Standardization Publication: MRI Distortion Check Software DS 110920 (ISO) 13485:2016. Registration No. 10000905- MP2016